"You won't lose by comparing three shops" ---- a Chinese proverb.         Rich people may not care about saving on shopping. But most of us do. A great way to save is to find which retailer offers the best price or best deal. This has been a hard job in traditional bricks-and-mortar shopping. However, it could be done by just a few clicks in online shopping.         The tool is the price comparison engines which search different e-tailers for product information on prices and availability within just seconds. Such a tool, as shown by us, provides a powerful way of saving. As a reminder, an item sold at the best price on an e-tailer does not mean that other items are sold at the best prices as well. To get a great saving, be sure that you compare the prices each time you buy.         Many e-tailers have special offers such as free shipping, discount and coupons to promote their business.